diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs
index 8968c1771e4c5..a269bd0b1747c 100644
--- a/compiler/rustc_feature/src/accepted.rs
+++ b/compiler/rustc_feature/src/accepted.rs
@@ -82,6 +82,8 @@ declare_features! (
     (accepted, attr_literals, "1.30.0", Some(34981)),
     /// Allows overloading augmented assignment operations like `a += b`.
     (accepted, augmented_assignments, "1.8.0", Some(28235)),
+    /// Allows using `avx512*` target features.
+    (accepted, avx512_target_feature, "CURRENT_RUSTC_VERSION", Some(44839)),
     /// Allows mixing bind-by-move in patterns and references to those identifiers in guards.
     (accepted, bind_by_move_pattern_guards, "1.39.0", Some(15287)),
     /// Allows bindings in the subpattern of a binding pattern.
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index 36e375c778d3f..de05f82d308c6 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -315,7 +315,6 @@ declare_features! (
     (unstable, aarch64_unstable_target_feature, "1.82.0", Some(44839)),
     (unstable, aarch64_ver_target_feature, "1.27.0", Some(44839)),
     (unstable, arm_target_feature, "1.27.0", Some(44839)),
-    (unstable, avx512_target_feature, "1.27.0", Some(44839)),
     (unstable, bpf_target_feature, "1.54.0", Some(44839)),
     (unstable, csky_target_feature, "1.73.0", Some(44839)),
     (unstable, ermsb_target_feature, "1.49.0", Some(44839)),
diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs
index b4ec1879fed5c..a6131e9d3af64 100644
--- a/compiler/rustc_target/src/target_features.rs
+++ b/compiler/rustc_target/src/target_features.rs
@@ -392,25 +392,25 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("amx-transpose", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("avx", Stable, &["sse4.2"]),
     ("avx2", Stable, &["avx"]),
-    ("avx512bf16", Unstable(sym::avx512_target_feature), &["avx512bw"]),
-    ("avx512bitalg", Unstable(sym::avx512_target_feature), &["avx512bw"]),
-    ("avx512bw", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512cd", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512dq", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512f", Unstable(sym::avx512_target_feature), &["avx2", "fma", "f16c"]),
-    ("avx512fp16", Unstable(sym::avx512_target_feature), &["avx512bw", "avx512vl", "avx512dq"]),
-    ("avx512ifma", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512vbmi", Unstable(sym::avx512_target_feature), &["avx512bw"]),
-    ("avx512vbmi2", Unstable(sym::avx512_target_feature), &["avx512bw"]),
-    ("avx512vl", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512vnni", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512vp2intersect", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avx512vpopcntdq", Unstable(sym::avx512_target_feature), &["avx512f"]),
-    ("avxifma", Unstable(sym::avx512_target_feature), &["avx2"]),
-    ("avxneconvert", Unstable(sym::avx512_target_feature), &["avx2"]),
-    ("avxvnni", Unstable(sym::avx512_target_feature), &["avx2"]),
-    ("avxvnniint16", Unstable(sym::avx512_target_feature), &["avx2"]),
-    ("avxvnniint8", Unstable(sym::avx512_target_feature), &["avx2"]),
+    ("avx512bf16", Stable, &["avx512bw"]),
+    ("avx512bitalg", Stable, &["avx512bw"]),
+    ("avx512bw", Stable, &["avx512f"]),
+    ("avx512cd", Stable, &["avx512f"]),
+    ("avx512dq", Stable, &["avx512f"]),
+    ("avx512f", Stable, &["avx2", "fma", "f16c"]),
+    ("avx512fp16", Stable, &["avx512bw", "avx512vl", "avx512dq"]),
+    ("avx512ifma", Stable, &["avx512f"]),
+    ("avx512vbmi", Stable, &["avx512bw"]),
+    ("avx512vbmi2", Stable, &["avx512bw"]),
+    ("avx512vl", Stable, &["avx512f"]),
+    ("avx512vnni", Stable, &["avx512f"]),
+    ("avx512vp2intersect", Stable, &["avx512f"]),
+    ("avx512vpopcntdq", Stable, &["avx512f"]),
+    ("avxifma", Stable, &["avx2"]),
+    ("avxneconvert", Stable, &["avx2"]),
+    ("avxvnni", Stable, &["avx2"]),
+    ("avxvnniint16", Stable, &["avx2"]),
+    ("avxvnniint8", Stable, &["avx2"]),
     ("bmi1", Stable, &[]),
     ("bmi2", Stable, &[]),
     ("cmpxchg16b", Stable, &[]),
@@ -418,7 +418,7 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("f16c", Stable, &["avx"]),
     ("fma", Stable, &["avx"]),
     ("fxsr", Stable, &[]),
-    ("gfni", Unstable(sym::avx512_target_feature), &["sse2"]),
+    ("gfni", Stable, &["sse2"]),
     ("kl", Unstable(sym::keylocker_x86), &["sse2"]),
     ("lahfsahf", Unstable(sym::lahfsahf_target_feature), &[]),
     ("lzcnt", Stable, &[]),
@@ -445,8 +445,8 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("sse4a", Unstable(sym::sse4a_target_feature), &["sse3"]),
     ("ssse3", Stable, &["sse3"]),
     ("tbm", Unstable(sym::tbm_target_feature), &[]),
-    ("vaes", Unstable(sym::avx512_target_feature), &["avx2", "aes"]),
-    ("vpclmulqdq", Unstable(sym::avx512_target_feature), &["avx", "pclmulqdq"]),
+    ("vaes", Stable, &["avx2", "aes"]),
+    ("vpclmulqdq", Stable, &["avx", "pclmulqdq"]),
     ("widekl", Unstable(sym::keylocker_x86), &["kl"]),
     ("x87", Unstable(sym::x87_target_feature), &[]),
     ("xop", Unstable(sym::xop_target_feature), &[/*"fma4", */ "avx", "sse4a"]),
diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 9625475e617ea..c4f036e87591b 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -189,9 +189,9 @@
 //
 // Target features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(avx512_target_feature))]
 #![feature(aarch64_unstable_target_feature)]
 #![feature(arm_target_feature)]
-#![feature(avx512_target_feature)]
 #![feature(hexagon_target_feature)]
 #![feature(keylocker_x86)]
 #![feature(loongarch_target_feature)]
diff --git a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-aes-vaes.rs b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-aes-vaes.rs
index 47f086f7340d7..48633c0a7fe66 100644
--- a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-aes-vaes.rs
+++ b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-aes-vaes.rs
@@ -2,7 +2,7 @@
 //@only-target: x86_64 i686
 //@compile-flags: -C target-feature=+aes,+vaes,+avx512f
 
-#![feature(avx512_target_feature, stdarch_x86_avx512)]
+#![feature(stdarch_x86_avx512)]
 
 use core::mem::transmute;
 #[cfg(target_arch = "x86")]
diff --git a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-avx512.rs b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-avx512.rs
index db59306389016..0ec2f679d80ba 100644
--- a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-avx512.rs
+++ b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-avx512.rs
@@ -2,7 +2,6 @@
 //@only-target: x86_64 i686
 //@compile-flags: -C target-feature=+avx512f,+avx512vl,+avx512bitalg,+avx512vpopcntdq
 
-#![feature(avx512_target_feature)]
 #![feature(stdarch_x86_avx512)]
 
 #[cfg(target_arch = "x86")]
diff --git a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-gfni.rs b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-gfni.rs
index a629e2acfe998..7e11e8c1d9598 100644
--- a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-gfni.rs
+++ b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-gfni.rs
@@ -6,7 +6,6 @@
 // be interpreted as integers; signedness does not make sense for them, but
 // __mXXXi happens to be defined in terms of signed integers.
 #![allow(overflowing_literals)]
-#![feature(avx512_target_feature)]
 #![feature(stdarch_x86_avx512)]
 
 #[cfg(target_arch = "x86")]
diff --git a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-vpclmulqdq.rs b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-vpclmulqdq.rs
index 68964728e4ea4..c7c9eb5e3951f 100644
--- a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-vpclmulqdq.rs
+++ b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-vpclmulqdq.rs
@@ -8,7 +8,6 @@
 // be interpreted as integers; signedness does not make sense for them, but
 // __mXXXi happens to be defined in terms of signed integers.
 #![allow(overflowing_literals)]
-#![feature(avx512_target_feature)]
 #![feature(stdarch_x86_avx512)]
 
 #[cfg(target_arch = "x86")]
diff --git a/tests/ui/abi/homogenous-floats-target-feature-mixup.rs b/tests/ui/abi/homogenous-floats-target-feature-mixup.rs
index 22b9b029a4049..2c78b794a8d74 100644
--- a/tests/ui/abi/homogenous-floats-target-feature-mixup.rs
+++ b/tests/ui/abi/homogenous-floats-target-feature-mixup.rs
@@ -7,8 +7,6 @@
 //@ run-pass
 //@ needs-subprocess
 
-#![feature(avx512_target_feature)]
-
 #![allow(overflowing_literals)]
 #![allow(unused_variables)]
 
diff --git a/tests/ui/abi/simd-abi-checks-avx.rs b/tests/ui/abi/simd-abi-checks-avx.rs
index c31af6460fc83..2948281bf6bc3 100644
--- a/tests/ui/abi/simd-abi-checks-avx.rs
+++ b/tests/ui/abi/simd-abi-checks-avx.rs
@@ -3,7 +3,6 @@
 //@ ignore-pass (test emits codegen-time warnings)
 //@ compile-flags: -C target-feature=-avx
 
-#![feature(avx512_target_feature)]
 #![feature(portable_simd)]
 #![feature(simd_ffi)]
 #![allow(improper_ctypes_definitions)]
diff --git a/tests/ui/abi/simd-abi-checks-avx.stderr b/tests/ui/abi/simd-abi-checks-avx.stderr
index 5419970f8093b..0dddc7dfa1c1b 100644
--- a/tests/ui/abi/simd-abi-checks-avx.stderr
+++ b/tests/ui/abi/simd-abi-checks-avx.stderr
@@ -1,5 +1,5 @@
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:65:11
+  --> $DIR/simd-abi-checks-avx.rs:64:11
    |
 LL |         f(g());
    |           ^^^ function called here
@@ -10,7 +10,7 @@ LL |         f(g());
    = note: `#[warn(abi_unsupported_vector_types)]` on by default
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:65:9
+  --> $DIR/simd-abi-checks-avx.rs:64:9
    |
 LL |         f(g());
    |         ^^^^^^ function called here
@@ -20,7 +20,7 @@ LL |         f(g());
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:73:14
+  --> $DIR/simd-abi-checks-avx.rs:72:14
    |
 LL |         gavx(favx());
    |              ^^^^^^ function called here
@@ -30,7 +30,7 @@ LL |         gavx(favx());
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:73:9
+  --> $DIR/simd-abi-checks-avx.rs:72:9
    |
 LL |         gavx(favx());
    |         ^^^^^^^^^^^^ function called here
@@ -40,7 +40,7 @@ LL |         gavx(favx());
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:85:19
+  --> $DIR/simd-abi-checks-avx.rs:84:19
    |
 LL |         w(Wrapper(g()));
    |                   ^^^ function called here
@@ -50,7 +50,7 @@ LL |         w(Wrapper(g()));
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `Wrapper` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:85:9
+  --> $DIR/simd-abi-checks-avx.rs:84:9
    |
 LL |         w(Wrapper(g()));
    |         ^^^^^^^^^^^^^^^ function called here
@@ -60,7 +60,7 @@ LL |         w(Wrapper(g()));
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:101:9
+  --> $DIR/simd-abi-checks-avx.rs:100:9
    |
 LL |         some_extern();
    |         ^^^^^^^^^^^^^ function called here
@@ -70,7 +70,7 @@ LL |         some_extern();
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function definition uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:28:1
+  --> $DIR/simd-abi-checks-avx.rs:27:1
    |
 LL | unsafe extern "C" fn g() -> __m256 {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -80,7 +80,7 @@ LL | unsafe extern "C" fn g() -> __m256 {
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function definition uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:22:1
+  --> $DIR/simd-abi-checks-avx.rs:21:1
    |
 LL | unsafe extern "C" fn f(_: __m256) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -90,7 +90,7 @@ LL | unsafe extern "C" fn f(_: __m256) {
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function definition uses SIMD vector type `Wrapper` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:16:1
+  --> $DIR/simd-abi-checks-avx.rs:15:1
    |
 LL | unsafe extern "C" fn w(_: Wrapper) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -100,7 +100,7 @@ LL | unsafe extern "C" fn w(_: Wrapper) {
    = help: consider enabling it globally (`-C target-feature=+avx`) or locally (`#[target_feature(enable="avx")]`)
 
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:58:8
+  --> $DIR/simd-abi-checks-avx.rs:57:8
    |
 LL |     || g()
    |        ^^^ function called here
@@ -113,7 +113,7 @@ warning: 11 warnings emitted
 
 Future incompatibility report: Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:65:11
+  --> $DIR/simd-abi-checks-avx.rs:64:11
    |
 LL |         f(g());
    |           ^^^ function called here
@@ -125,7 +125,7 @@ LL |         f(g());
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:65:9
+  --> $DIR/simd-abi-checks-avx.rs:64:9
    |
 LL |         f(g());
    |         ^^^^^^ function called here
@@ -137,7 +137,7 @@ LL |         f(g());
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:73:14
+  --> $DIR/simd-abi-checks-avx.rs:72:14
    |
 LL |         gavx(favx());
    |              ^^^^^^ function called here
@@ -149,7 +149,7 @@ LL |         gavx(favx());
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:73:9
+  --> $DIR/simd-abi-checks-avx.rs:72:9
    |
 LL |         gavx(favx());
    |         ^^^^^^^^^^^^ function called here
@@ -161,7 +161,7 @@ LL |         gavx(favx());
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:85:19
+  --> $DIR/simd-abi-checks-avx.rs:84:19
    |
 LL |         w(Wrapper(g()));
    |                   ^^^ function called here
@@ -173,7 +173,7 @@ LL |         w(Wrapper(g()));
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `Wrapper` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:85:9
+  --> $DIR/simd-abi-checks-avx.rs:84:9
    |
 LL |         w(Wrapper(g()));
    |         ^^^^^^^^^^^^^^^ function called here
@@ -185,7 +185,7 @@ LL |         w(Wrapper(g()));
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:101:9
+  --> $DIR/simd-abi-checks-avx.rs:100:9
    |
 LL |         some_extern();
    |         ^^^^^^^^^^^^^ function called here
@@ -197,7 +197,7 @@ LL |         some_extern();
 
 Future breakage diagnostic:
 warning: this function definition uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:28:1
+  --> $DIR/simd-abi-checks-avx.rs:27:1
    |
 LL | unsafe extern "C" fn g() -> __m256 {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -209,7 +209,7 @@ LL | unsafe extern "C" fn g() -> __m256 {
 
 Future breakage diagnostic:
 warning: this function definition uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:22:1
+  --> $DIR/simd-abi-checks-avx.rs:21:1
    |
 LL | unsafe extern "C" fn f(_: __m256) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -221,7 +221,7 @@ LL | unsafe extern "C" fn f(_: __m256) {
 
 Future breakage diagnostic:
 warning: this function definition uses SIMD vector type `Wrapper` which (with the chosen ABI) requires the `avx` target feature, which is not enabled
-  --> $DIR/simd-abi-checks-avx.rs:16:1
+  --> $DIR/simd-abi-checks-avx.rs:15:1
    |
 LL | unsafe extern "C" fn w(_: Wrapper) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function defined here
@@ -233,7 +233,7 @@ LL | unsafe extern "C" fn w(_: Wrapper) {
 
 Future breakage diagnostic:
 warning: this function call uses SIMD vector type `std::arch::x86_64::__m256` which (with the chosen ABI) requires the `avx` target feature, which is not enabled in the caller
-  --> $DIR/simd-abi-checks-avx.rs:58:8
+  --> $DIR/simd-abi-checks-avx.rs:57:8
    |
 LL |     || g()
    |        ^^^ function called here
diff --git a/tests/ui/asm/x86_64/evex512-implicit-feature.rs b/tests/ui/asm/x86_64/evex512-implicit-feature.rs
index ea2acd424e2c6..ec5da7c7fa488 100644
--- a/tests/ui/asm/x86_64/evex512-implicit-feature.rs
+++ b/tests/ui/asm/x86_64/evex512-implicit-feature.rs
@@ -2,7 +2,6 @@
 //@ only-x86_64
 //@ compile-flags: --crate-type=lib -C target-cpu=skylake
 
-#![feature(avx512_target_feature)]
 #![feature(stdarch_x86_avx512)]
 
 use std::arch::x86_64::*;
diff --git a/tests/ui/asm/x86_64/target-feature-attr.rs b/tests/ui/asm/x86_64/target-feature-attr.rs
index 6bb277ac16598..2193117caeb6d 100644
--- a/tests/ui/asm/x86_64/target-feature-attr.rs
+++ b/tests/ui/asm/x86_64/target-feature-attr.rs
@@ -2,8 +2,6 @@
 // Set the base cpu explicitly, in case the default has been changed.
 //@ compile-flags: -C target-cpu=x86-64
 
-#![feature(avx512_target_feature)]
-
 use std::arch::asm;
 
 #[target_feature(enable = "avx")]
diff --git a/tests/ui/asm/x86_64/target-feature-attr.stderr b/tests/ui/asm/x86_64/target-feature-attr.stderr
index 0cd571ac8cce8..c852726ee7ff8 100644
--- a/tests/ui/asm/x86_64/target-feature-attr.stderr
+++ b/tests/ui/asm/x86_64/target-feature-attr.stderr
@@ -1,23 +1,23 @@
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:20:40
+  --> $DIR/target-feature-attr.rs:18:40
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                        ^^^^^^^^^^^^^
 
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:20:55
+  --> $DIR/target-feature-attr.rs:18:55
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                                       ^^^^^^^^^^^^^
 
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:20:70
+  --> $DIR/target-feature-attr.rs:18:70
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                                                      ^^^^^^^^^^^^^^^^^^
 
 error: register class `kreg` requires at least one of the following target features: avx512bw, avx512f
-  --> $DIR/target-feature-attr.rs:35:23
+  --> $DIR/target-feature-attr.rs:33:23
    |
 LL |     asm!("/* {0} */", in(kreg) x);
    |                       ^^^^^^^^^^
diff --git a/tests/ui/simd/target-feature-mixup.rs b/tests/ui/simd/target-feature-mixup.rs
index 2786251c7951b..77f1861524870 100644
--- a/tests/ui/simd/target-feature-mixup.rs
+++ b/tests/ui/simd/target-feature-mixup.rs
@@ -7,7 +7,6 @@
 //@ ignore-fuchsia must translate zircon signal to SIGILL, FIXME (#58590)
 
 #![feature(repr_simd, target_feature, cfg_target_feature)]
-#![feature(avx512_target_feature)]
 
 use std::process::{Command, ExitStatus};
 use std::env;
diff --git a/tests/ui/target-feature/auxiliary/using-target-feature-unstable.rs b/tests/ui/target-feature/auxiliary/using-target-feature-unstable.rs
index 2682028936c19..15bcfdd9076e0 100644
--- a/tests/ui/target-feature/auxiliary/using-target-feature-unstable.rs
+++ b/tests/ui/target-feature/auxiliary/using-target-feature-unstable.rs
@@ -1,5 +1,5 @@
-#![feature(avx512_target_feature)]
+#![feature(x87_target_feature)]
 
 #[inline]
-#[target_feature(enable = "avx512ifma")]
+#[target_feature(enable = "x87")]
 pub unsafe fn foo() {}
diff --git a/tests/ui/target-feature/gate.rs b/tests/ui/target-feature/gate.rs
index 14fdad02f5665..9244a98d82fdf 100644
--- a/tests/ui/target-feature/gate.rs
+++ b/tests/ui/target-feature/gate.rs
@@ -2,7 +2,6 @@
 //
 // gate-test-sse4a_target_feature
 // gate-test-powerpc_target_feature
-// gate-test-avx512_target_feature
 // gate-test-tbm_target_feature
 // gate-test-arm_target_feature
 // gate-test-hexagon_target_feature
@@ -27,7 +26,7 @@
 // gate-test-x87_target_feature
 // gate-test-m68k_target_feature
 
-#[target_feature(enable = "avx512bw")]
+#[target_feature(enable = "x87")]
 //~^ ERROR: currently unstable
 unsafe fn foo() {}
 
diff --git a/tests/ui/target-feature/gate.stderr b/tests/ui/target-feature/gate.stderr
index fa876893848f7..32d60ce438227 100644
--- a/tests/ui/target-feature/gate.stderr
+++ b/tests/ui/target-feature/gate.stderr
@@ -1,11 +1,11 @@
-error[E0658]: the target feature `avx512bw` is currently unstable
-  --> $DIR/gate.rs:30:18
+error[E0658]: the target feature `x87` is currently unstable
+  --> $DIR/gate.rs:29:18
    |
-LL | #[target_feature(enable = "avx512bw")]
-   |                  ^^^^^^^^^^^^^^^^^^^
+LL | #[target_feature(enable = "x87")]
+   |                  ^^^^^^^^^^^^^^
    |
    = note: see issue #44839 <https://github.com/rust-lang/rust/issues/44839> for more information
-   = help: add `#![feature(avx512_target_feature)]` to the crate attributes to enable
+   = help: add `#![feature(x87_target_feature)]` to the crate attributes to enable
    = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/target-feature/unstable-feature.rs b/tests/ui/target-feature/unstable-feature.rs
index f62c4dd938a0b..a79ad4696033a 100644
--- a/tests/ui/target-feature/unstable-feature.rs
+++ b/tests/ui/target-feature/unstable-feature.rs
@@ -1,8 +1,8 @@
-//@ compile-flags: -Ctarget-feature=+vaes --crate-type=rlib --target=x86_64-unknown-linux-gnu
+//@ compile-flags: -Ctarget-feature=+x87 --crate-type=rlib --target=x86_64-unknown-linux-gnu
 //@ build-pass
 //@ needs-llvm-components: x86
 
 #![feature(no_core)]
 #![no_core]
 
-//~? WARN unstable feature specified for `-Ctarget-feature`: `vaes`
+//~? WARN unstable feature specified for `-Ctarget-feature`: `x87`
diff --git a/tests/ui/target-feature/unstable-feature.stderr b/tests/ui/target-feature/unstable-feature.stderr
index d34544c5c2773..309b64afd9224 100644
--- a/tests/ui/target-feature/unstable-feature.stderr
+++ b/tests/ui/target-feature/unstable-feature.stderr
@@ -1,4 +1,4 @@
-warning: unstable feature specified for `-Ctarget-feature`: `vaes`
+warning: unstable feature specified for `-Ctarget-feature`: `x87`
    |
    = note: this feature is not stably supported; its behavior can change in the future